New York's Shiro-Ishii — named for the Imperial Japanese Army Unit 731 commander — combines technical death metal's surgical precision with grindcore's convulsive brutality, making for a relentlessly punishing and disturbing listen since 2018.

Mechanicsville, Maryland's Shit deals in death-laced grindcore with zero pretense, trading in short, furious blasts of extreme noise that sit comfortably in the American underground's most uncompromising corners since 2016.

San Clemente, California's Shit Wizard merges black and death metal with a nihilistic, lo-fi edge, building a reputation in the Southern California underground for unfiltered, filthy extreme metal since 2012.

Burlington, Vermont's Shitangel throws black, death, and thrash into a single caustic blender, emerging as one of the more abrasively minded acts in the New England underground with an irreverent approach to extreme metal since 2019.

El Paso's Shitbear has been combining death metal's brutality, thrash's speed, and grindcore's intensity since 2011, forging an ugly, unpretentious extreme metal attack that reflects the border city's grinding underground energy.

Detroit's Shitfucker have been weaponizing the intersection of black, death, and thrash metal since 2005, lacing their filth-encrusted attack with punk belligerence — a Motor City band that sounds like it was dragged out of a dumpster fire and handed a guitar.

Kentucky's Shitkluster push brutal death metal and grindcore through the angular filter of djent, arriving at a dissonant, technically precise kind of brutality that refuses to sit still — formed in 2015 and perpetually refusing to be categorized.

Oakland's Shitty Fucker have been grinding out their Bay Area blend of death/thrash and grindcore since 2017, drawing on the region's long tradition of aggressive, politically charged underground metal with an unpolished, high-energy assault.

Philadelphia's Shiv merge death metal's crushing heaviness with hardcore's blunt-force directness, operating out of Philly's notoriously intense extreme music scene since 2016 with a sound as sharp and purposeful as their name implies.

Formed in Detroit in 2023, Shivers channel the city's long history of unrelenting extremity into a goregrind and death metal assault — visceral, low-fidelity, and built for maximum discomfort.

Los Angeles grindcore and death metal act Shock Withdrawal launched in 2022 with a ferocious, high-velocity sound that blends the clinical brutality of death metal with grindcore's chaotic, compressed aggression — another entry in LA's densely packed extreme underground.

Gulfport, Mississippi's Shokushu Goukan have been operating at the fringe of death metal and grindcore since 2011, delivering a relentlessly extreme sound from an unlikely corner of the Deep South underground.

Columbus, Ohio's Shores of Elysium have been working the boundary between melodic death metal and deathcore since 2012, combining memorable melodic hooks with the heaviness and aggression that define Ohio's prolific extreme metal output.

Cleveland death/thrash outfit Shores of Fire formed in 2018 with a direct, aggressive style that merges the riff density of death metal with thrash's propulsive momentum — firmly in the tradition of Ohio's hard-edged, no-nonsense extreme metal.

Phoenix, Arizona's Shores of Ithaka formed in 2023 drawing on the epic, narrative qualities of Homeric myth to inform their melodic death metal — a sound built around sweeping leads and heavy grooves well-suited to the desert Southwest's dramatic terrain.